INST
ALLER'S
INSTRUCTION
INST
ALLER'S
INSTRUCTION
P33 OF 44
P34 OF 44
CONNECT WIRING BETWEEN OUTDOOR UNIT AND INDOOR UNIT
Check the nameplate for rated electrical data.
o
o
Check power and wire length and sizes. Use NEC, 105 C/221 F type copper wire. Refer to the following tables,
for proper selection of wire gauge and colour.
Remove the wiring diagram cover where also the
handle for moving unit is located.
Follow the wiring diagrams on the unit or the wiring
diagram manual that comes with the indoor unit to
get familiar with wiring and make sure nothing is
made wrong. If there is any discrepancy, always
use the one put in the units.
Connect wires between indoor unit and outdoor
unit-power wire from outdoor to Indoor, control
wires from Indoor unit to outdoor unit. Pass wire
through certified wire pipes, harnesses and
knockouts. Enough length shall be left for future
service. Only copper wire is allowed.
Bring in line-voltage power input wires from circuit
breaker to line-voltage wire terminal block at
outdoor unit. Pass through certified wire pipes,
harnesses and knockouts. Enough length shall be
left for future service. Only copper wire is allowed.
Strictly follow NEC or state or local codes to select
wires, circuit breaker, conduits and to perform
installation work.
Disconnect switch box for outdoor unit
OUTDOOR WIRING: OUTDOOR-INDOOR UNIT & DISCONNECT SWITCH
BOX/CIRCUIT BREAKER/FUSE
WIRING OUTDOOR UNIT
(Field-Supplied, Not Spliced and Not Knotted,
Water-Proof Sealed Tight, UL Approved)
PIPING AND WIRING SIZES-UNITS MADE AFTER 05/2010
Model Liquid/
Gas Line
Min/Max.
Length/
+/-Elevation
Power Wire
Disconnect Switch Box to
Outdoor Unit
Power/ Control Wire
Outdoor to Indoor Unit
HVAC Circuit
Breaker/Fuse AMP
(to Outdoor Unit)
09K
12K
18K
24K
30K
36K
1/4” & 3/8”
1/4” & 1/2”
3/8” & 5/8”
3/8” & 5/8”
3/8” & 5/8”
3/8” & 5/8”
15/70/25/35
15/70/25/35
15/100/30/50
15/100/30/50
15/100/30/50
15/100/30/50
L1/N1/G, 115 or 230/1/60, 14/16AWG
L1/N1/G, 115 or 230/1/60, 12/14AWG
L11/L22/G, 208-230/1/60, 14AWG
L11/L22/G, 208-230/1/60, 12AWG
L11/L22/G, 208-230/1/60, 10AWG
L11/L22/G, 208-230/1/60, 8AWG
AC:1/3, HP:1/3/4, 115 or 230/1/60, 16AWG
AC:1/3, HP:1/3/4, 115 or 230/1/60, 16AWG
AC:1/3, HP:1/3/4, 208~230/1/60, 16AWG
AC:1/3, HP:1/3/4, 208~230/1/60, 16AWG
AC:1/3, HP:1/3/4, 208~230/1/60, 16AWG
AC:1/3, HP:1/3/4, 208~230/1/60, 16AWG
20/10, 25/20
25/10, 35/15
20, 25
25, 30
30, 40
35, 45
CONNECT REFRIGERANT PIPES BETWEEN INDOOR AND OUTDOOR UNITS
Firstly, connect copper tubes at indoor unit. Bend
pipes by tools but not by hands. Extra length is
needed for future service.
REFRIGERANT PIPES:
For distance other than 25' between indoor and
horizontal venting condensing units, refer to the
following table for copper sizes.
Make sure the pipe section where is to be cut is
straight and smooth. Apply cutting blade straightly
perpendicular to the pipe surface. Don't cut too fast
or too hard. Turn and tighten the tube cutter slowly.
Remove residual left at the cutting edge. The cutting
edge should be clear and clean and smooth.
Running Interconnection Refrigerant Lines:
Use clean refrigeration grade of copper tubing only.
Keep the copper lines from kinking and transmitting
noise to walls, cabinets, etc. Not to exceed 100' with
35' of vertical lift included. Insulate the suction line
with at least 3/8" thick insulation tubes. Band and
tape and secure refrigerant lines. Support copper
lines at proper distance apart to keep tubes from
sagging.
CUT REFRIGERANT PIPE:
Connect Copper Pipes-Flare/nut Connection at Both Indoor and Outdoor Units
Proper torque shall be applied to make good connection at female nut, flare and male nut, as recommended in
the following table. Too much torque may damage and break flare/nut seal. Too less torque may not ensure
good seal. ALWAYS use a pair of wretches.
Flare Nut
1/4-3/8"
1/4-1/2"
1/2-3/4"
7/8-1 1/8"
Tightening Torque
25 Ft. LBs (350 Kgf.cm)
40 Ft. LBs (560 Kgf.cm)
60 Ft. LBs (840 Kgf.cm)
110Ft. LBs (1540 Kgf.cm)
Refrigerant Pipe Flare/Nut Connection Tightening Torque
Refrigerant Pipe Min/Max. Length, Rise and Drop Height
CONNECT REFRIGERANT PIPES
In this case, put wet rag to protect valves or other components from being overheated. When using flux, rub the
tube surface using steel wool to shine and clean to dry as so to keep to-be-sealed system from any possible
contamination.
Connect Copper Pipes-Sweat Connection
Refrigerant Valve and Pipe Size/Length
K
Btu/h
09
12
18
24
30
36
Valve Size
Liq, Gas
1/4", 3/8"
1/4", 1/2"
3/8", 5/8"
3/8", 5/8"
3/8", 5/8"
3/8", 5/8"
15-30ft
1/4", 3/8"
1/4", 1/2"
3/8", 5/8"
3/8", 5/8"
3/8", 5/8"
3/8", 5/8"
31-60ft
1/4", 1/2"
1/4", 5/8"
3/8", 3/4"
3/8", 3/4"
3/8", 3/4"
3/8", 3/4"
Line Sizes at Different Length
1,000 Btu/h
09-12
18-24
30-36
Max. Length (Ft.)
50
75
100
Max. Rise Height (Ft.)
20
25
35
Max. Drop Height (Ft.)
28
35
50
Min. Length (Ft.)
15
15
15
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
